Nutritional therapy is very important in burn patients and plays a role in the prevention and treatment of malnutrition. Therefore, it is necessary to assess nutritional status, prevent or minimize nutritional problems, and monitor nutritional therapy. This study was conducted to determine the nutritional risk, nutritional status and biochemical parameters of adult burn patients in the burn intensive care unit. The 59 patients (women: 16, men: 43) between the ages of 19-64 were included in the study. Parameters such as NRS-2002 (admission and discharge), dietary intake, nutritional support status, serum albumin, and total protein (admission and discharge) were evaluated to determine the nutritional risk and nutritional status of the patients. In addition, body weight, mid-upper arm circumference, and triceps skinfold thickness were measured and body mass index was calculated (admission and discharge). The duration of hospitalization and burn percentage of men patients were higher than women (P < 0.05). A significant decreases were determined in the mean body weight, body mass index, and triceps skinfold thickness of men patients at discharge compared to admission (P < 0.05). In men patients, a statistically significant difference was found in serum albumin, hemoglobin, and hematocrit values between admission and discharge (P < 0.05). A statistically significant difference was found in NRS-2002 scores at admission and discharge in both genders, and the scores increased (P < 0.05). While a significant relationship was found between immunonutrition support and gender (P < 0.05), no relationship was found between genders in terms of the diet given and the consumption status of the diet intake (P > 0.05). No statistically significant difference was found between genders in terms of feeding duration with nutritional support products, energy intake with nutritional support products and diet, macronutrients, and total energy expenditure values (P > 0.05). Since burn injuries can cause serious metabolic disorders, impaired nutritional status was encountered during hospitalization. While the treatment process was positively affected by the increase in the NRS-2002 score during hospitalization, a decrease in parameters such as albumin, total protein, and anthropometric measurement values brought about by the catabolic process was encountered. Therefore, to prevent or treat malnutrition, the nutritional status of patients should be evaluated at the time of hospitalization and they should be able to receive the necessary nutritional support.
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